               :tundra    {:movement-cost 4 :armor-bonus -1 :attack-bonus -1}
               :swamp     {:movement-cost 6 :armor-bonus -2 :attack-bonus -2}
               :ford      {:movement-cost 5 :armor-bonus -1 :attack-bonus -1}
-              :base      {:movement-cost 2 :armor-bonus  3 :attack-bonus  2}}
+              :base      {:movement-cost 2 :armor-bonus  3 :attack-bonus  2}
+              :seaport   {:movement-cost 2 :armor-bonus  0 :attack-bonus  0}}
             :attack-strengths
             {:personnel 5
              :armored   2}

            :state-map :move-attack
            :image "tilesets/elite-command/units/tank-COLOR.png"
            :terrain-effects
            {:plains {:movement-cost 3 :armor-bonus  0 :attack-bonus 0}
             :woods  {:movement-cost 6 :armor-bonus -3 :attack-bonus 0}
             :desert {:movement-cost 4 :armor-bonus  0 :attack-bonus 0}
             :tundra {:movement-cost 5 :armor-bonus  0 :attack-bonus 0}
             :swamp  {:movement-cost 8 :armor-bonus -4 :attack-bonus 0}
             :ford   {:movement-cost 8 :armor-bonus  0 :attack-bonus 0}
             :base   {:movement-cost 2 :armor-bonus -2 :attack-bonus 0}}
            :attack-strengths
            {:personnel 10
             :armored   10}

               :state-map :move-attack
               :image "tilesets/elite-command/units/cruiser-COLOR.png"
               :terrain-effects
               {:sea     {:movement-cost 1 :armor-bonus 0 :attack-bonus 0}
                :seaport {:movement-cost 1 :armor-bonus 0 :attack-bonus 0}}
               :attack-strengths
               {:personnel 14
                :armored   16}
